Marathon session: Woodson still visiting

As a result, seemingly every free-agent safety has been linked to the 49ers.

Former Packers safety Charles Woodson, of course, is visiting the 49ers today. Woodson arrived in Santa Clara this morning and, as of 7:50 p.m., was still visiting with the team, according to his agent, Carl Poston.

The marathon session suggests things are progressing well between the eight-time Pro Bowler and the Niners. Jim Harbaugh and Woodson, both Michigan alums, have known each other for about 15 years.

If Woodson leaves without a contract, though, there are backup plans.

Here’s a rundown of the other safety news:

Former Ravens safety Ed Reed, 34, could visit the 49ers if he leaves Houston without a contract, CBS Sports reported. Reed will visit the Texans on Thursday.

………………………………………….

Scratch LaRon Landry off the list. The former Jets safety is close to signing with the Colts, according to the New York Daily News. Landry was scheduled to fly to the Bay Area tonight if he left Indianapolis without a deal. (Update: Landry has officially signed with the Colts, per multiple reports).

………………………………………….

Former Lions safety Louis Delmas, 25, will visit the 49ers after taking a trip to St. Louis, ESPN reported. The No. 33 pick in the 2009 draft, Delmas was a Pro Bowl alternate in 2010 and ’11 (I know, along with half the NFL).

Delmas has missed 13 games over the past two seasons with knee injuries. In 2011, he had surgery to repair a partially torn MCL in his right knee. He missed eight games in 2012 to relieve tendonitis in his left knee.